System and method for focus on touch with a touch sensitive screen display

ABSTRACT

The disclosed embodiments help the user of an electronic device with a touch screen to quickly and accurately select an actionable component on the touch screen before launching an application and reduce errors that can occur by inadvertently touching the wrong component. This problem is solved by providing a way to place the focus on a component (e.g., soft keyboard key) of the user interface before launching the associated application. A relative distance algorithm may be used to determine the closest actionable component to the touch point. Focus is placed on that component by highlighting, speech, audio indicator or some other means, clearly indicating to the user which icon has been selected.

FIELD OF THE INVENTION

The present invention relates to multifunction devices with touch screen displays having the ability to focus on touch.

BACKGROUND

Screen displays are becoming smaller and smaller with the progression from personal computer to smart phones to wearable electronics such as smart watches. Due to the smaller sizes, icons on touch screens are also becoming increasingly smaller and closer together and therefore make it more difficult to enter commands. As a result, when many such icons are located near each other, you can easily trigger an unintended action by touching the wrong one.

SUMMARY

Accordingly, in an exemplary embodiment, there is disclosed a method of focusing on touch on a touch sensitive screen of a device, the method comprising: displaying a plurality of components on the touch sensitive screen; receiving a first touch input at a first point on the touch sensitive screen; and determining a first component of the plurality of components having a distance closest to the first point and focusing on that first component.

In another exemplary embodiment, there is disclosed a method of focusing on touch on a touch sensitive screen of a device, the method comprising: displaying a plurality of components on the touch sensitive screen; receiving a first touch input at a first point on the touch sensitive screen; and determining a first component of the plurality of components by a predetermined application configuration corresponding to the location of the first touch input; and focusing on that first component

In yet another exemplary embodiment, there is disclosed a computing device comprising: a touch sensitive screen; one or more processors having a memory which is coupled to the touch sensitive screen, said memory including at least one program capable of being executed on the one or more processors to: display a plurality of components on the touch sensitive screen; receive a first touch input at a first point on the touch sensitive screen; and determine a first component of the plurality of components having a distance closest to the first point and focusing on that first component.

The foregoing illustrative summary, as well as other exemplary objectives and/or advantages of the invention, and the manner in which the same are accomplished, are further explained within the following detailed description and its accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1A and 1B are block diagram illustrations of a portable multifunction device 100 having a touch-sensitive display screen.

FIG. 2A is an illustration of a user interface on the touch-sensitive screen display having a component “6” which is set in focus (e.g., highlighted) automatically since it is closest to the initial touch point.

FIG. 2B is an illustration of the user interface of FIG. 2A depicting the touch point moving closer along arrow 204 to component “5” with the focus also moving.

FIG. 2C is an illustration of the user interface of FIGS. 2A and 2B with the component “1” set in focus since the touch point is now closest to component “1”.

FIG. 3 is a flow chart of the focus on touch process.

FIG. 4 is a flow chart of an alternative focus on touch process.

DETAILED DESCRIPTION

FIGS. 1A and 1B illustrate a multifunction device 100 with a touch sensitive screen display (or just “touch sensitive screen”) 102. The touch sensitive screen 102 may display one or more graphics, alphanumeric symbols, and/or icons within a graphical user interface (GUI) 200. In general, device 100 may be implemented in any form of digital computer or mobile device having a touch sensitive screen. Digital computers with a touch sensitive screen may include, but are not limited to, laptops, desktops, workstations, a multimedia player device, fixed vehicle computers, vehicle mount computers, hazardous environment computers, rugged mobile computers, servers, blade servers, mainframes, and any other types of computers. Mobile devices with a touch sensitive screen may include, but are not limited to, cellular telephones, smart phones, personal digital assistants, tablets, pagers, smart watches, two-way radios, netbooks, barcode scanners, radio frequency identification (RFID) readers, intelligent sensors, tracking devices, and other similar mobile computing devices.

GUI 200 of FIG. 1A provides an input interface and an output interface between the device 100 and a user. Interface 200 is capable of providing a visual output which may include graphics, text, numbers, icons, video, and any combination thereof (collectively termed “graphics”). An example of a visual output would be the “soft” numeric keyboard shown in FIGS. 2A-2C. The keyboard may include standard (QWERTY) and/or non-standard configurations of symbols on the soft keyboard. As the user taps on the soft keyboard, a display controller (141 in FIG. 1B) in device 100 receives (and sends) electrical signals from (and to) the touch sensitive screen 102.

FIG. 1B is a block diagram of exemplary multifunction device 100 with touch screen display 102. The device 100 may include other components not shown in FIG. 1B, nor further discussed herein for the sake of brevity. One having ordinary skill in the art will understand the additional hardware and software included but not shown in FIG. 1B. In general, as shown, multifunction device 100 includes a processing system 110 that includes one or more processors 111 (e.g., Central Processing Units (CPUs), Application Specific Integrated Circuits (ASICs), and/or Field Programmable Gate Arrays (FPGAs)), a memory controller 112, memory 113 which may include software 114, and other components that are not shown for brevity. The one or more processors 111 may run or execute various software programs and/or sets of instructions stored in memory 113 and perform various functions for the device 100 including operating the touch sensitive screen 102 and Processing data. The processing system 110 may also include storage 115, such as a hard drive or solid state drive. The processing system 110 also includes a peripherals interface 116 for communicating with an input/output (I/O) subsystem 140, which includes the display(s) controller 141 operative to process touch inputs on the touch sensitive screen 102. The touch inputs may include tap, double tap, continuous drag of the touch across the touch sensitive screen 102 and other configurable inputs.

The peripherals interface 116 is coupled to and in communication with other components of the device 100, including but not limited to, radio frequency (RF) circuitry 152, such as Wi-Fi and/or cellular communications circuitry such as wireless Ethernet, Bluetooth™, and near field communication (NFC); audio circuitry 154 for the audio input component 153, such as a microphone; audio output component 155, such as a speaker; one or more accelerometers 156; one or more other sensors 158, such as a location determination element such as a Global Positioning System (GPS) chip; and one or more external ports 160, which may be used for smart card readers or for wired connections such as wired Ethernet, USB, serial or I²C ports. The RF circuitry 152 and external ports 160 individually and collectively make up the communication interfaces for the device 100. The processing system 110 is also connected to a power system component 120 (e.g., battery pack) that is used to power the device 100. The elements of device 100 may be interconnected using one or more buses, represented generically by the bidirectional arrows of FIG. 1B, and may be mounted on a motherboard (not shown) or some other appropriate configuration. It should be appreciated that the device 100 is only one e ample of a multifunction device 100, and that the device 100 may have more or fewer elements than shown, may combine two or more elements, or a may have a different configuration or arrangement of the elements.

Referring again to FIG. 1A, touch sensitive screen 102 has a touch-sensitive surface, sensor, or set of sensors that accept input from the user based on contact. The touch sensitive screen 102 and the display controller 141 (along with any associated modules and/or sets of instructions in memory) detects contact, movement across the surface of the touch sensitive screen 102 (e.g., continuous dragging of a finger) and breaking of contact from the touch screen 102. The detected contact is converted into interaction with user-interface objects (e.g., one or more soft keys, icons, web pages, or images) that are displayed on the touch sensitive screen 102. In an exemplary embodiment, a point of contact between a touch sensitive screen 102 and the user corresponds to a finger of the user (203 as shown in FIGS. 2A-2C) or a stylus held by the user. The touch sensitive screen 102 may use LCD (liquid crystal display) technology or other display technologies. The touch sensitive screen 102 and the display controller 141 may detect contact using any of a plurality of capacitive touch sensing technologies now known or later developed, including but not limited to projected mutual capacitance touch sensing technologies, as well as other proximity sensor arrays or other elements for determining areas of contact with the touch screen 102.

The user may make contact with the touch screen 102 using any suitable object or appendage, such as a stylus, a finger (203), and so forth. In some embodiments, the user interface 200 is designed to work primarily with finger-based contacts and gestures, which are much less precise than stylus-based input due to the larger surface area of contact of a finger on the touch screen. Multifunction device 100 translates the rough finger-based input into a precise command for performing the actions desired by the user.

Generally speaking with most touch screen operating systems, no GUI 200 component selection is until the user actually taps an “actionable” component such as the numeric components labeled 1 to 6 as shown in the user interface 200 of FIGS. 2A-2C. When many components are located near each other on a small screen, you can easily trigger an unintended action by touching the wrong component. For example, in an effort to start application (“app”) A, you may try to tap its icon, but because of the close proximity of other icons, you inadvertently tap the icon for app B, which starts instead. So you must close or exit app B, return to the main screen, and try once again to tap the icon for app A. Or, you try to tap the icon for app C, but miss and actually touch empty screen area, with the result that no app starts. Neither result contributes to a desirable user experience and leads to wasted time.

The present invention helps the user of an electronic device with a touch sensitive screen to quickly and accurately select an actionable component on the touch sensitive screen before launching an application and reduce errors that can occur by inadvertently touching the wrong component. This problem is solved by providing a way to place the focus on a component before launching the associated application. Focus is placed on that component by highlighting, speech, audio indicator or some other means, clearly indicating to the user which icon, symbol, number, letter, etc. has been selected.

FIGS. 2A-2C demonstrate the method of focus on touch which also illustrated by the flowcharts of FIGS. 3 and 4. FIG. 2A shows touch sensitive screen 102 with exemplary GUI 200 numeric components 1-6 (step 300 in FIGS. 3 and 4). As shown, after an initial (or first) touch point of the display screen 102 by finger 203 (or in alternative embodiments with a pointer such as a stylus) (step 302) the distance to the closest component is determined (step 304). A relative distance algorithm may be used to determine the closest actionable component to the touch point (as described in detail below). In the embodiment of FIG. 2A a visual focus is placed on the component “6” by highlighting it (step 306) since it is closest the initial touch point.

The calculation of the distance from the touch point to the plurality of components to find the shortest distance may be made using an algorithm. Assuming there are “n” components on the display screen 102, each represented by a point (x_(i),y_(i)) where i is a number from 1 to n. The set of points representing n components on the screen is {(x₁,y₁),(x₂,y₂), . . . , (x_(n),y_(n))}. A touch point Z may be located at coordinate (x,y) on the display screen 102. D_(n) is the distance between point Z and a component and is calculated as follows:

D _(n)=√{square root over ((x−x _(n))²+(y−y _(n))²)}

The set of distances from Z to each of the n components is {D₁,D₂, . . . , D_(n)}. One example algorithm for calculating the shortest distance is by comparing one distance with the rest of the distances in the set. If the shortest distance is D₁, for j=2 to n, if D_(j)<the shortest distance, then the shortest distance becomes D_(j). The process is continued until all the distances in the set of distances have been compared to D₁ and the closest component is determined.

Returning to the method illustrated by the flowchart of FIG. 3, if the focus is on the correct component (step 308) then the user may input the selection of the component at any point on the display screen. As discussed above, the user's input may take several forms such as a tap, double tap, or other configurable input method. When the user input is received at the screen 102 at any location the multifunction device 100 triggers some type of action that the component currently in focus is controlling (step 310) (e.g., a tap is received to launch an application). If the focus is not on the correct component, then continuously dragging a finger 203 (or stylus) across the display screen 102 as indicated by arrow 204 of FIG. 2B moves the focus from component to component until the correct component is highlighted (step 312). As demonstrated in FIG. 2B, as the touch point moves towards component 5, the focus also moves. In FIG. 2C, component 1 is next set in focus because the touch point has moved along arrow 206 and is now closest to component 1.

In an alternative embodiment illustrated by the flowchart of FIG. 4, the first touch point does not necessarily focus on a component nearest to the touch point. The focus instead is application defined and after the user's touch input is received, the focus is placed on a predetermined, default location (e.g., a blank spot on a fillable form). The process outlined in FIG. 3 is modified in FIG. 4 by step 314 accordingly. An example of this embodiment would be a tax form which has a default starting field. If the focus is not on the desired component, then continuously dragging a finger 203 (or stylus) across the display screen 102 moves the focus from component to component until the desired component is highlighted.

In other alternative embodiments, in addition to (or instead of) a highlight for the focus, the focus could be speech or audio in nature and produce a sound or tone indicating the component which is now focused. For example, a person without sight could hear the focus shift from component to component as they moved their finger 203 (or stylus) across the display screen 102.

As discussed above as the touch sensitive display screens shrink, it is easy to touch the wrong icon and launch an undesired app. The embodiments disclosed herein should help to avoid wasted time and frustration and enhance the user experience.

To supplement the present disclosure, this application incorporates entirely by reference the following commonly assigned patents, patent application publications, and patent applications:

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In the specification and/or figures, typical embodiments of the invention have been disclosed. The present invention is not limited to such exemplary embodiments. The use of the term “and/or” includes any and all combinations of one or more of the associated listed items. The figures are schematic representations and so are not necessarily drawn to scale. Unless otherwise noted, specific terms have been used in a generic and descriptive sense and not for purposes of limitation.

Although process (or method) steps may be described or claimed in a particular sequential order, such processes may be configured to work in different orders. In other words, any sequence or order of steps that may be explicitly described or claimed does not necessarily indicate a requirement that the steps be performed in that order unless specifically indicated. Further, some steps may he performed simultaneously despite being described or implied as occurring non-simultaneously (e.g., because one step is described after the other step) unless specifically indicated. Where a process is described in an embodiment the process may operate without any user intervention. 

1. A method of focusing on touch on a touch sensitive screen of a device, the method comprising: displaying a plurality of components on the touch sensitive screen; receiving a first touch input at a first point on the touch sensitive screen; and determining a first component of the plurality of components having a distance closest to the first point and focusing on that first component.
 2. The method of claim 1, further comprising: receiving a second touch input at a second point on the touch sensitive screen; determining whether the first component or a second component of the plurality of components has a distance closest to the second point; and moving the focus to the second component if the distance closest to the second point from the second component is shorter than the distance from the first component.
 3. The method of claim 1, further comprising: receiving a second touch input at any location on the touch sensitive screen to trigger the component of the plurality of components currently in focus.
 4. The method of claim 3, wherein the input is a tap.
 5. The method of claim 1, further comprising: starting from the first point and continuously receiving a dragging input across the surface of the touch sensitive screen to move the focus from the first component to a second component.
 6. The method of claim 1, wherein the first touch input is received from a human finger.
 7. The method of claim 1, wherein the first touch input is received from a stylus.
 8. The method of claim 1, wherein the focusing is a highlight.
 9. The method of claim 1, wherein the focusing is an audible indicator.
 10. A method of focusing on touch on a touch sensitive screen of a device, the method comprising: displaying a plurality of components on the touch sensitive screen; receiving a first touch input at a first point on the touch sensitive screen; and determining a first component of the plurality of components by a predetermined application configuration; and focusing on that first component by default.
 11. The method of claim 10, further comprising: receiving a second touch input at a second point on the touch sensitive screen; determining whether the first component or a second component of the plurality of components has a distance closest to the second point; and moving the focus to the second component if the distance closest to the second point from the second component is shorter than the distance from the first component.
 12. The method of claim 10, further comprising: receiving a second touch input at the touch sensitive screen at any location on the touch sensitive screen to trigger the component of the plurality of components currently in focus.
 13. The method of claim 10, wherein the focusing is an audible indicator.
 14. The method of claim 10, wherein the focusing is a highlight.
 15. A computing device comprising: a touch sensitive screen; one or more processors having a memory which is coupled to the touch sensitive screen, said memory including at least one program capable of being executed on the one or more processors to: display a plurality of components on the touch sensitive screen; receive a first touch input at a first point on the touch sensitive screen; and determine a first component of the plurality of components having a distance closest to the first point and focusing on that first component.
 16. The computing device of claim 15, wherein the one or more processors are further configured to: receive a second touch input at a second point on the touch sensitive screen; determine whether the first component or a second component of the plurality of components has a distance closest to the second point; and move the focus to the second component if the distance closest to the second point is shorter than the distance from the first component.
 17. The computing device of claim 15, wherein the one or more processors are further configured to: receive a tap at the touch sensitive screen at any location to trigger the component of the plurality of components currently in focus.
 18. The computing device of claim 15, wherein the one or more processors are further configured to: start from the first point and continuously receive a dragging touch input across the surface of the touch sensitive screen to move the focus from the first component to a second component.
 19. The computing device of claim 15, wherein the one or more processors are further configured to: receive the first touch input from a human finger.
 20. The computing device of claim 15, wherein the one or more processors are further configured to: receive the first input touch from a stylus. 